Andrew Mountbatten-Windsor, the man formerly known as Prince Andrew, has been arrested on suspicion of misconduct in public office, the BBC reported on Thursday.

The younger brother of King Charles has been in increasingly serious trouble over revelations about his links to the late U.S. sex offender Jeffrey Epstein.

King Charles last year stripped his younger brother of his title of prince and forced him out of his Windsor home, seeking to distance him from the royal family over his links to the Epstein scandal.

Earlier, British newspapers reported that six unmarked police cars and around eight plain-clothed officers had arrived at Wood Farm on the Sandringham estate in eastern England.

Thames Valley Police said earlier this month officers were considering allegations that Mountbatten-Windsor had passed confidential government documents to Epstein, according to files recently released by the U.S. government.

Mountbatten-Windsor, the second son of the late Queen Elizabeth, has always denied any wrongdoing in relation to Epstein and said he regrets their friendship. He has not responded to requests for comment since the latest release of documents.

Andrew Mountbatten-Windsor has given back a royal Norwegian order that the former prince received almost four decades ago, Norway’s palace said.

The Order of St. Olav, Norway’s most prestigious peacetime award, recognises distinguished service by its recipients, and was bestowed on then-Prince Andrew in 1988.

“Andrew Mountbatten-Windsor has chosen to return his order,” a palace spokesperson in Oslo said.

Norway’s royal palace declined to comment on why the order had been returned, citing confidentiality in matters of such awards.

Norway’s King Harald is related to King Charles and Andrew Mountbatten-Windsor through several royal ancestors, including Britain’s 19th-century monarch Queen Victoria.